CREATE EXTENSION IF NOT EXISTS pg_trgm;

UPDATE users
SET phone = '0' || LPAD(id::text, 19, '0')
WHERE phone IS NULL;

ALTER TABLE users
    ALTER COLUMN email DROP NOT NULL,
    ALTER COLUMN phone SET NOT NULL,
    ALTER COLUMN name DROP NOT NULL;

DROP INDEX IF EXISTS uk_users_email_active;

CREATE UNIQUE INDEX uk_users_email_active
    ON users(email)
    WHERE email IS NOT NULL AND deleted_at IS NULL;

CREATE UNIQUE INDEX IF NOT EXISTS uk_users_phone_active
    ON users(phone)
    WHERE deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_users_status_created_at
    ON users(status, created_at DESC)
    WHERE deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_users_email_trgm_active
    ON users USING GIN (email gin_trgm_ops)
    WHERE email IS NOT NULL AND deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_users_phone_trgm_active
    ON users USING GIN (phone gin_trgm_ops)
    WHERE deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_users_name_trgm_active
    ON users USING GIN (name gin_trgm_ops)
    WHERE name IS NOT NULL AND deleted_at IS NULL;